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Adaptive compression

  • US 8,427,346 B2
  • Filed: 04/13/2010
  • Issued: 04/23/2013
  • Est. Priority Date: 04/13/2010
  • Status: Expired due to Fees
First Claim
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1. A method performed by a computing system for compressing data, comprising:

  • identifying two or more partitions of a data stream;

    optionally pre-processing data in each partition;

    creating one or more evaluation functions to evaluate a suitability for compression of the data in each partition using a set of potential compression methods;

    processing the created one or more evaluation functions;

    choosing a subset of the set of potential compression methods for each partition at least partly by analyzing the evaluation functions;

    selecting using a dynamic programming technique a compression method for each partition based at least on a compression rate of the data in the partition;

    compressing the data in each partition using the selected compression method for the partition, thereby creating a sequence of compression methods wherein each member of the sequence indicates a compression method used to compress a corresponding partition; and

    compressing a subsequence of the sequence of compression methods.

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